Electric hair dryer

Abstract

The invention discloses an electric hair dryer which comprises a housing with a cylindrical air tunnel, wherein a handle extends from the housing, a heater, a fan and a motor for driving the fan to rotate are arranged in the housing, a serrated retaining ring is arranged at an air outlet of the housing, an alloy air collecting nozzle with the outer diameter which is slightly smaller than that of saw teeth of the serrated retaining ring is placed on the serrated retaining ring, a cylindrical heat insulation sleeve is further arranged in the housing, the back end of heat insulation sleeve is fixed or bonded on the inner wall of the housing, and a cold air duct is formed between the outer wall of the front end of the heat insulation sleeve and the inner wall of the housing. When hot air is used for drying and shaping hair, cold air blown from the fan can enter into the cold air duct formed between the heat insulation sleeve and the housing along an air inlet structure and blown out through holes of the saw teeth of the serrated retaining ring at an outer ring of air outlet, thereby producing a cold air ring on the periphery of hot air blown from the alloy air collecting nozzle, facilitating the cooling and the shaping of the dried hair, and effectively preventing the hair and scalp from being damaged by a continuous hot stream.

Description

technical field [0001] The invention relates to a hair dryer. Background technique [0002] Hair dryer is a commonly used electrical appliance in people's lives. It is mainly used for drying and shaping hair, but it can also be used for local drying, heating and physical therapy in laboratories, physiotherapy rooms, industrial production, and art workers. The hair dryer directly relies on the motor to drive the rotor to drive the fan blades to rotate. When the blades rotate, air is sucked in from the air inlet, and the resulting centrifugal airflow is blown out by the front nozzle of the air cylinder. When the air passes through, if the heater on the heating bracket installed in the air nozzle has been energized and heated, the hot air will be blown out; if the switch is selected so that the heater is not energized and heated, the cold air will be blown out, which is realized by the hair dryer. For drying and shaping purposes. At present, the hair dryer in the prior art e...

AI Technical Summary

Problems solved by technology

In this case, if you use hot air to dry your hair, the continuous heat flow will cause damage to the hair and scalp, and it is also very unfavorable to hair shaping.

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